Raises the bar in optical quality with leading edge "fluorite-crystal" technology that eliminates chromatic aberration and delivers incredibly sharp clear images. Lightweight compact system has an overall length of just 13.5" yet offers one of the largest diameter objective lenses (88mm) in the business. Dual focus adjustment knob features quick focus in two revolutions and one revolution fine focus. Durable magnesium alloy body is lightweight without sacrificing strength. Secures to both 1/4" and 3/8" tripods. 20-60x variable magnification eyepieces feature a spherical lenses for maximum field of view over the entire power range. Long relief, 25x fixed magnification eyepiece provides the extra room needed when wearing glasses. Eyepieces and storage case must be purchased separately. Spotting scope can be used while enclosed in wrap-around storage case.